Radiating or boiler plate



A. L. PENNOOK.

Domestic Boiler. No. 102,312. Patented April 26, 1870.

Witnegm: 311mm:

" 7 5; l E fl im gttmmaga UNITED STATES PATENT OFFICE.

RADIATING OR BOILER PLATE.

Specification forming part of Letters Patent No. 102,312. dated April23, 1870.

To all whom it may concern:

Be it known that I, ABRAHAM LIDDON, PEN- NOOK, of Philadelphia, in thecounty of Philadelphia and State of Pennsylvania, have invented a new,and Improved Radiating or Boiler Plate; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable others skilled in the art to make and use the same, referencebeing had to the accompanying drawings, forming part of thisspecification.

Figure 1 represents a plan view of my improved boiler-plate. Fig. 2 is alongitudinal section of the same.

Similar letters of referenceindicate corresponding parts.

This invention relates to new heating or radiating plate, which is soconstructed as to contain almost the largest attainable heatingsurface,without making it difficult to be cast.

The invention is applicable to steam-boil-' ers as heating-surface, orto heaters for radiating purposes.

The invention consists in making the plate entirely of hollow pyramidalprojections, which are arranged alternately on both sides of the plate,tooccupy the entire surface of the same.

A in the drawings represents my improved radiating or heating plate. Itis made of castiron or other suitable material, and is made of hollowpyramidal projections a a, which are arranged alternately on oppositesides of the plate. The pyramidal projections are set so close together,with an object of economiz ing space and enlarging the heating-surface,

that each side of each one is continued to the opposite side of theplate to constitute a side of the opposite but contiguous pyramid. Onthe outer side of the plate the heating or radiating surface is formedby the outer sides of the outwardly, and by the inner faces of theinwardly-projecting pyramids. Each face of the plate A appears as thoughcomposed of T alternate pyramidal projections a and depressions, thelatter being the inner sides of the inwardly-projecting pyramids a. Thisplate,

it will be seen, is so formed that it can be ABRAHAM LIDDON PEN N OCK.

Witnesses:

A. v. BRIEsEN,

GEO. W. MABEE.

